ASTROSAT CZTI

Data Quality Report

Orbit 38876

Creation date: 2024-06-27T21:57:33.393104
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A12_077T06_9000005408_38876cztM0_level2.fits modeM0/AS1A12_077T06_9000005408_38876cztM0_level2_quad_clean.evt
Size (bytes)270,512,64066,335,040
Size258.0 MB 63.3 MB
Events in quadrant A2,350,408444,878
Events in quadrant B2,587,560453,591
Events in quadrant C1,882,476434,300
Events in quadrant D2,876,342389,515

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D030

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0820
B0820
C0820
D0820

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A094171
B0101871
C081361
D0113011

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4056260.641026%
B4056922.268245%
C405630.073964%
D40561724.240631%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 4056 4056 19 19 0.47% 0.47%
B 4056 4056 62 62 1.53% 1.53%
C 4056 4056 0 0 0.00% 0.00%
D 4056 4056 160 160 3.94% 3.94%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 272851 2930.53 449 439 93.0
A 12 16 228139 2449.53 449 439 93.0
A 13 248 51162 545.66 449 439 93.0
B 5 184 346237 3974.05 443 430 87.0
B 4 251 342514 3931.26 443 430 87.0
B 15 85 59539 679.29 443 430 87.0
C 15 214 166750 1615.57 438 440 102.9
C 0 10 4641 40.81 438 440 102.9
C 13 61 2936 24.25 438 440 102.9
D 2 250 317582 2946.8 433 418 107.6
D 12 227 285953 2652.93 433 418 107.6
D 12 235 199966 1854.02 433 418 107.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter